gcc/testsuite/gcc.dg/torture/pr56689.c

/* { dg-do compile } */

extern int baz ();
extern void bar (void);
extern void noret (void)   __attribute__ ((__noreturn__));

void
fix_register (const char *name, int fixed, int call_used, int nregs)
{
  int i;
  int reg;

  if ((reg = baz ()) >= 0)
    {
      for (i = reg; i < nregs; i++)
	{
	  if ((i == 15 || i == 11) && (fixed == 0 || call_used == 0))
	    {
	      switch (fixed)
		{
		case 0:
		  switch (call_used)
		    {
		    case 1:
		      bar ();
		      break;
		    default:
		      (noret ());
		    }
		case 1:
		  switch (call_used)
		    {
		    case 1:
		      break;
		    case 0:
		    default:
		      (noret ());
		    }
		  break;
		default:
		  (noret ());
		}
	    }
	}
    }
}